WM8706

Production Data

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PD Rev 4.1 July 2005

4

PIN DESCRIPTION

PIN

NAME

TYPE

DESCRIPTION

1

LRCIN

Digital Input

DAC Sample Rate Clock Input

2

DIN

Digital Input

Serial Audio Data Input

3

BCKIN

Digital Input

Audio Data Bit Clock Input.

4

NC

No internal connection

5

ZERO

Digital Output (Open Drain) Infinite ZERO Detect Flag (L=IZD detected, H=IZD not detected)

6

NC

No Internal Connection

7

DGND

Supply

Digital Ground Supply

8

DVDD

Supply

Digital Positive Supply

9

NC

No Internal Connection

10

NC

No Internal Connection

11

NC

No Internal Connection

12

NC

No Internal Connection

13

VOUTR

Analogue Output

Right Channel DAC Output

14

AGND

Supply

Analogue Ground Supply

15

AVDD

Supply

Analogue Positive Supply

16

VOUTL

Analogue Output

Left Channel DAC Output

17

NC

No Internal Connection

18

VMID

Analogue Output

Mid Rail Decoupling Point

19

VREFN

Supply

DAC Negative Reference – normally AGND, must not be below AGND

20

VREFP

Supply

DAC Positive Reference – normally AVDD, must not be above AVDD

21

ZERO

Digital Output

Infinite Zero Detect Flag

22

NC

No Internal Connection

23

CSBIWO

Digital Input

Software Mode: 3-Wire Serial Control Chip Select

Hardware Mode: Input Word Length, Pull Up

24

MODE

Digital Input

Control Mode Selection (Low = Hardware, High = Software), Pull Down

25

MUTEB

Digital Bi-directional

Mute Control (L = Mute on, H = Mute off, Z = Automute Enabled), Pull

Up

26

MDDM0

Digital Bi-directional

Software Mode: 3-Wire Serial Control Data Input:

Hardware Mode: De-Emphasis

27

MCDM1

Digital Input

Software Mode: 3-Wire Serial Control Clock Input

Hardware Mode: De-Emphasis, Pull Down

28

MLIIS

Digital Input

Software Mode 3-Wire Serial Control Load Input

Hardware Mode: Input Data Format Selection, Pull Up

Note:

Digital input pins have Schmitt trigger input buffers.